Retirement And Other Postretirement Benefits (Components Of Qualified Net Pension Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	$ 33,845	$ 38,531	$ 108,482	$ 126,722
Interest cost on projected benefit obligation	60,734	49,222	164,529	142,702
Expected return on assets	(100,203)	(106,684)	(306,895)	(318,437)
Amortization of loss	42,367	69,386	159,359	266,576
Net other postretirement benefit cost	162,291	95,173	273,676	373,829
Pension Plans Defined Benefit [Member] | Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	6,138	6,966	19,695	21,640
Interest cost on projected benefit obligation	11,866	9,396	30,944	26,488
Expected return on assets	(18,731)	(19,585)	(57,009)	(58,896)
Amortization of loss	10,283	16,100	36,557	53,652
Net other postretirement benefit cost	21,033	20,115	53,160	74,508
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	8,261	9,230	26,405	29,033
Interest cost on projected benefit obligation	12,523	10,270	33,706	29,695
Expected return on assets	(20,586)	(22,466)	(62,779)	(67,521)
Amortization of loss	10,156	15,201	35,055	52,294
Net other postretirement benefit cost	43,861	25,444	70,355	91,702
Pension Plans Defined Benefit [Member] | Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,953	2,197	6,158	6,865
Interest cost on projected benefit obligation	3,383	2,735	8,857	7,769
Expected return on assets	(5,006)	(5,629)	(15,373)	(16,815)
Amortization of loss	2,941	4,580	10,371	15,556
Net other postretirement benefit cost	10,124	7,568	19,074	24,822
Pension Plans Defined Benefit [Member] | Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	690	735	2,194	2,304
Interest cost on projected benefit obligation	1,368	1,156	3,646	3,264
Expected return on assets	(2,487)	(2,678)	(7,517)	(7,941)
Amortization of loss	1,208	1,656	3,944	5,996
Net other postretirement benefit cost	5,181	1,976	6,669	8,314
Pension Plans Defined Benefit [Member] | Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,441	1,680	4,652	5,237
Interest cost on projected benefit obligation	2,795	2,213	7,242	6,215
Expected return on assets	(4,551)	(5,341)	(14,393)	(15,851)
Amortization of loss	2,130	2,815	7,124	9,941
Net other postretirement benefit cost	14,897	3,001	20,172	13,803
Pension Plans Defined Benefit [Member] | System Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,891	2,141	5,937	6,707
Interest cost on projected benefit obligation	2,882	2,379	7,614	6,757
Expected return on assets	(4,509)	(4,853)	(13,718)	(14,436)
Amortization of loss	2,641	4,135	9,078	14,393
Net other postretirement benefit cost	7,498	7,888	15,527	22,146
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	6,184	6,645	18,552	19,935
Interest cost on projected benefit obligation	6,827	5,320	20,481	15,960
Expected return on assets	(10,855)	(10,805)	(32,565)	(32,415)
Amortization of prior service cost (credit)	(6,388)	(8,267)	(19,164)	(24,801)
Amortization of loss	1,083	713	3,249	2,139
Net other postretirement benefit cost	(3,149)	(6,394)	(9,447)	(19,182)
Other Postretirement [Member] | Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,114	1,034	3,342	3,102
Interest cost on projected benefit obligation	1,263	932	3,789	2,796
Expected return on assets	(4,483)	(4,505)	(13,449)	(13,515)
Amortization of prior service cost (credit)	471	(280)	1,413	(840)
Amortization of loss	218	49	654	147
Net other postretirement benefit cost	(1,417)	(2,770)	(4,251)	(8,310)
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,408	1,544	4,224	4,632
Interest cost on projected benefit obligation	1,443	1,130	4,329	3,390
Expected return on assets	0	0	0	0
Amortization of prior service cost (credit)	(1,158)	(1,230)	(3,474)	(3,690)
Amortization of loss	(186)	(91)	(558)	(273)
Net other postretirement benefit cost	1,507	1,353	4,521	4,059
Other Postretirement [Member] | Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	339	362	1,017	1,086
Interest cost on projected benefit obligation	350	278	1,050	834
Expected return on assets	(1,394)	(1,384)	(4,182)	(4,152)
Amortization of prior service cost (credit)	(443)	(444)	(1,329)	(1,332)
Amortization of loss	56	19	168	57
Net other postretirement benefit cost	(1,092)	(1,169)	(3,276)	(3,507)
Other Postretirement [Member] | Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	99	109	297	327
Interest cost on projected benefit obligation	174	130	522	390
Expected return on assets	(1,499)	(1,438)	(4,497)	(4,314)
Amortization of prior service cost (credit)	(229)	(229)	(687)	(687)
Amortization of loss	(225)	(178)	(675)	(534)
Net other postretirement benefit cost	(1,680)	(1,606)	(5,040)	(4,818)
Other Postretirement [Member] | Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	331	346	993	1,038
Interest cost on projected benefit obligation	399	317	1,197	951
Expected return on assets	(2,568)	(2,548)	(7,704)	(7,644)
Amortization of prior service cost (credit)	(1,093)	(936)	(3,279)	(2,808)
Amortization of loss	162	100	486	300
Net other postretirement benefit cost	(2,769)	(2,721)	(8,307)	(8,163)
Other Postretirement [Member] | System Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	310	335	930	1,005
Interest cost on projected benefit obligation	279	220	837	660
Expected return on assets	(791)	(789)	(2,373)	(2,367)
Amortization of prior service cost (credit)	(80)	(109)	(240)	(327)
Amortization of loss	30	15	90	45
Net other postretirement benefit cost	(252)	(328)	(756)	(984)
Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	5,900	6,900	23,300	16,000
Non Qualified Pension Plans [Member] | Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	69	86	212	266
Non Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	24	192	77	280
Non Qualified Pension Plans [Member] | Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	80	91	241	283
Non Qualified Pension Plans [Member] | Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	28	7	84	23
Non Qualified Pension Plans [Member] | Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	$ 961	$ 115	$ 1,264	$ 345